SMP – using more than one CPU

This rather short article is all about adding SMP to your kernel.
Technically, SMP is symmetric
multiprocessing. Practically, it means having more than one CPU. Such
machines are faster than single CPU machines.

In this article, I will assume you have a
dual-cpu box. It’s not hard to expand this section to apply to more CPUs, but I’m
not going to guess at exactly how that is done.